13885818 has 32 divisors (see below), whose sum is σ = 28740096. Its totient is φ = 4469808.

The previous prime is 13885811. The next prime is 13885819. The reversal of 13885818 is 81858831.

It is a self number, because there is not a number n which added to its sum of digits gives 13885818.

It is not an unprimeable number, because it can be changed into a prime (13885811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27355 + ... + 27857.

It is an arithmetic number, because the mean of its divisors is an integer number (898128).

Almost surely, 2^13885818 is an apocalyptic number.

13885818 is an abundant number, since it is smaller than the sum of its proper divisors (14854278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13885818 is a wasteful number, since it uses less digits than its factorization.

13885818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its digits is 61440, while the sum is 42.

The square root of 13885818 is about 3726.3679367448. The cubic root of 13885818 is about 240.3572111260.

The spelling of 13885818 in words is "thirteen million, eight hundred eighty-five thousand, eight hundred eighteen".